• Code: C8070
• Description: Inner tray communication error (optional 3000-sheet document finisher)
  Communication with the inner tray is not possible although the connection is detected.
• Causes: Poor contact in the connector terminals. Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC6 and YC24 on the finisher main PWB and the connector YC1 and YC4 on the inner tray PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective PWB. Replace the inner tray PWB or finisher main PWB and check for correct operation.

• Code: C8140
• Description: Main tray problem (optional 3000- sheet document finisher)
  The main tray is not detected by the main tray upper limit detection sensor or the main tray paper upper surface detection sensor within 20 s since the tray has started ascending. The main tray upper limit detection sensor or the main tray paper upper surface detection sensor is not detected to be turned off in 20 s after the main tray has descended. The main tray low limit detection sensor is not detected to be turned on in 20 s after the main tray has descended. During main tray ascent, the main tray upper limit detection sensor or the main tray paper upper surface detection sensor stays on for more than 2 s.
• Causes: Poor contact in the connector terminals. Defective main tray motor. Defective main tray upper limit detection sensor/main tray paper upper surface detection sensor/main tray lower limit detection sensor. Defective finisher main PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC11 on the finisher main PWB and the connector on the main tray motor, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective main tray motor. Replace the main tray motor.
  Defective main tray upper limit detection sensor/main tray paper upper surface detection sensor/main tray lower limit detection sensor. Replace the sensor.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: C8140
• Description: Tray elevation motor problem (optional document finisher)
  The tray low limit sensor or paper surface sensor 1/2 cannot be detected to be on within 10 s since the tray elevation motor is activated.
• Causes: The tray elevation motor connector makes poor contact. The tray elevation motor malfunctions. The tray lower limit sensor, paper surface sensor 1/2 connector makes poor contact. Defective tray lower limit sensor, paper surface sensor 1/2. Defective finisher main PWB.
• Remedy: The tray elevation motor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  The tray elevation motor malfunctions. Replace the tray elevation motor.
  The tray lower limit sensor, paper surface sensor 1/2 connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective tray lower limit sensor, paper surface sensor 1/2. Replace the sensor.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: C8170
• Description: Side registration motor 1 problem (optional 3000-sheet document finisher)
  When operation returned to a home position is performed at the time of initial operation and a home position is not detected even if 3 s passed. Jam 88 is indicated.
• Causes: Poor contact in the connector terminals. Defective side registration motor 1. Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC2 on the inner tray PWB and the connector on side registration motor 1, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective side registration motor 1. Replace side registration motor 1.
  Defective PWB. Replace the inner tray PWB or finisher main PWB and check for correct operation.

• Code: C8180
• Description: Side registration motor 2 problem (optional 3000-sheet document finisher)
  When operation returned to a home position is performed at the time of initial operation and a home position is not detected even if 3 s passed. Jam 88 is indicated.
• Causes: Poor contact in the connector terminals. Defective side registration motor 2. Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC8 on the inner tray PWB and the connector of side registration motor 2, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective side registration motor 2. Replace side registration motor 2.
  Defective PWB. Replace the inner tray PWB or finisher main PWB and check for correct operation.

• Code: C8210
• Description: Stapler moving motor 1 error (optional 3000-sheet document finisher)
  When operation returned to a home position is performed at the time of initial operation and a home position is not detected even if 1.5 s passed.
• Causes: Poor contact in the connector terminals. Defective stapler moving motor 1. Defective finisher main PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC9 on the finisher main PWB and the connector of stapler moving motor 1, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective stapler moving motor 1. Replace stapler moving motor 1.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: C8210
• Description: Stapler problem (optional document finisher)
  Jam 82 is indicated.
• Causes: The stapler connector makes poor contact. The stapler is blocked with a staple. The stapler is broken. Defective finisher main PWB
• Remedy: The stapler connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  The stapler is blocked with a staple. Remove the stapler cartridge, and check the cartridge and the stapling section of the stapler.
  The stapler is broken. Replace the stapler and check for correct operation.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: C8220
• Description: Stapler moving motor 2 error (optional 3000-sheet document finisher)
  When operation returned to a home position is performed at the time of initial operation and a home position is not detected even if 3.5 s passed.
• Causes: Poor contact in the connector terminals. Defective stapler moving motor 2. Defective staple relay PWB. Defective finisher main PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC10 on the finisher main PWB and the connector of staple relay PWB and stapler moving motor 2, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective stapler moving motor 2. Replace stapler moving motor 2.
  Defective staple relay PWB. Replace the staple relay PWB and check for correct operation.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.